What steps can be taken to ensure cross-browser compatibility when implementing image manipulation features in PHP, particularly in relation to different browser behaviors and functionalities?

Ensuring cross-browser compatibility when implementing image manipulation features in PHP involves using libraries or frameworks that abstract away browser-specific behaviors and functionalities. One popular library for image manipulation in PHP is Intervention Image, which provides a consistent API for working with images across different browsers.

// Example using Intervention Image library for image manipulation
require 'vendor/autoload.php'; // Include the autoloader

use Intervention\Image\ImageManagerStatic as Image;

// Open an image file
$img = Image::make('example.jpg');

// Resize the image to a specific width and height
$img->resize(300, 200);

// Save the manipulated image
$img->save('output.jpg');